C++ (Cpp) Brush::gradient Examples

Example #1

File: imagepaintengine.cpp Project: pasberth/PaintField

void drawWithSpreadType(T_Rasterizer *ras, Bitmap<Pixel> *bitmap, BlendOp *blendOp, const PaintEngineState &state)
{
	const Brush brush = state.brush;
	const float opacity = state.opacity;
	
	if (brush.type() == Malachite::BrushTypeColor)
	{
		ColorFiller filler(brush.pixel());
		fill(ras, bitmap, blendOp, &filler, opacity);
		return;
	}
	
	QTransform fillShapeTransform = brush.transform() * state.shapeTransform;
	
	if (brush.type() == Malachite::BrushTypeImage)
	{
		if (transformIsIntegerTranslating(fillShapeTransform))
		{
			QPoint offset(fillShapeTransform.dx(), fillShapeTransform.dy());
			
			ImageFiller<T_SpreadType> filler(brush.image().constBitmap(), offset);
			fill(ras, bitmap, blendOp, &filler, opacity);
			return;
		}
		else
		{
			drawTransformedImageBrush<T_Rasterizer, T_SpreadType, Bitmap<Pixel> >(ras, bitmap, blendOp, brush.image().constBitmap(), opacity, fillShapeTransform.inverted(), state.imageTransformType);
			return;
		}
	}
	if (brush.type() == Malachite::BrushTypeSurface)
	{
		drawTransformedImageBrush<T_Rasterizer, T_SpreadType, Surface>(ras, bitmap, blendOp, brush.surface(), opacity, fillShapeTransform.inverted(), state.imageTransformType);
		return;
	}
	if (brush.type() == Malachite::BrushTypeLinearGradient)
	{
		LinearGradientShape info = brush.linearGradientShape();
		
		if (info.transformable(fillShapeTransform))
		{
			info.transform(fillShapeTransform);
			fillShapeTransform = QTransform();
		}
		
		if (fillShapeTransform.isIdentity())
		{
			LinearGradientMethod method(info.start, info.end);
			GradientGenerator<ColorGradient, LinearGradientMethod, T_SpreadType> gen(brush.gradient(), &method);
			Filler<GradientGenerator<ColorGradient, LinearGradientMethod, T_SpreadType>, false> filler(&gen);
			fill(ras, bitmap, blendOp, &filler, opacity);
			return;
		}
		else
		{
			LinearGradientMethod method(info.start, info.end);
			GradientGenerator<ColorGradient, LinearGradientMethod, T_SpreadType> gen(brush.gradient(), &method);
			Filler<GradientGenerator<ColorGradient, LinearGradientMethod, T_SpreadType>, true> filler(&gen, fillShapeTransform.inverted());
			fill(ras, bitmap, blendOp, &filler, opacity);
			return;
		}
	}
	if (brush.type() == Malachite::BrushTypeRadialGradient)
	{
		RadialGradientShape info = brush.radialGradientShape();
		
		if (info.transformable(fillShapeTransform))
		{
			info.transform(fillShapeTransform);
			fillShapeTransform = QTransform();
		}
		
		if (info.center == info.focal)
		{
			if (fillShapeTransform.isIdentity())
			{
				RadialGradientMethod method(info.center, info.radius);
				GradientGenerator<ColorGradient, RadialGradientMethod, T_SpreadType> gen(brush.gradient(), &method);
				Filler<GradientGenerator<ColorGradient, RadialGradientMethod, T_SpreadType>, false> filler(&gen);
				fill(ras, bitmap, blendOp, &filler, opacity);
				return;
			}
			else
			{
				RadialGradientMethod method(info.center, info.radius);
				GradientGenerator<ColorGradient, RadialGradientMethod, T_SpreadType> gen(brush.gradient(), &method);
				Filler<GradientGenerator<ColorGradient, RadialGradientMethod, T_SpreadType>, true> filler(&gen, fillShapeTransform.inverted());
				fill(ras, bitmap, blendOp, &filler, opacity);
				return;
			}
		}
		else
		{
			if (fillShapeTransform.isIdentity())
			{
				FocalGradientMethod method(info.center, info.radius, info.focal);
				GradientGenerator<ColorGradient, FocalGradientMethod, T_SpreadType> gen(brush.gradient(), &method);
				Filler<GradientGenerator<ColorGradient, FocalGradientMethod, T_SpreadType>, false> filler(&gen);
				fill(ras, bitmap, blendOp, &filler, opacity);
				return;
			}
			else
			{
				FocalGradientMethod method(info.center, info.radius, info.focal);
				GradientGenerator<ColorGradient, FocalGradientMethod, T_SpreadType> gen(brush.gradient(), &method);
				Filler<GradientGenerator<ColorGradient, FocalGradientMethod, T_SpreadType>, true> filler(&gen, fillShapeTransform.inverted());
				fill(ras, bitmap, blendOp, &filler, opacity);
				return;
			}
		}
	}
}